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Saturday, Nov. 7

Auction for the Rivers: 6 to 10 p.m. at the Powerhouse Event Center, 621 S. 17th St., Boise. Appetizers and cash bar. $15 admission, $10 for Idaho Rivers United members. Become a member at the door and enter for free. idahorivers.org.

Tuesday, Nov. 10

Conservation History of Idaho’s Boulder-White Clouds: 7 to 8 p.m. at Idaho Outdoor Association, 3401 Brazil St., Boise. This presentation by Craig Gehrke, director, Idaho Office of The Wilderness Society, will recount the early efforts at protecting the Boulder-White Clouds from the threat of an open pit mine. Free. idahooutdoorassn.org.